Expo Axis 'Sunny Valleys' illuminates for test

A view of the illuminateed Expo Axis, known as the 'Sunny Valleys' is seen at the 2010 World Expo site in Shanghai on August 17, 2009. The funnelshaped structures can divert sunlight into underground rooms and collect rainwater for recycling. The Sunny Valleys are on a major passage that links the Expo's main theme pavilions.(China.org.cn / CFP)